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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Exhaust Components
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<blockquote data-quote="BigEd" data-source="post: 38203" data-attributes="member: 161"><p>Dear Howard,</p><p>It was some time ago now and I think that the meter I used at the time had a knob to set the range you wanted to measure. The "limit" at the time was 115dB so I probably had the scale set to 115-120dB. I expect that with all the advances in electronics the modern meters are possibly auto-ranging. I think it was probably over 120 dB. There were some very noisy exhausts in the early days of race noise regulation.</p><p>A personal comment on noise is that an engine working hard on an open megaphone is still a sound that to me still brings back memories of Manx Norton's etc onthe mountain in the Isle of Man. (Happy days. Happy but hard of hearing!) Unfortunately too much noise was going to lose us the use of short circuits especially at places like Mallory Park where parts of the circuit were only 100 yards or so away from some of the houses in the village.</p></blockquote><p></p>
[QUOTE="BigEd, post: 38203, member: 161"] Dear Howard, It was some time ago now and I think that the meter I used at the time had a knob to set the range you wanted to measure. The "limit" at the time was 115dB so I probably had the scale set to 115-120dB. I expect that with all the advances in electronics the modern meters are possibly auto-ranging. I think it was probably over 120 dB. There were some very noisy exhausts in the early days of race noise regulation. A personal comment on noise is that an engine working hard on an open megaphone is still a sound that to me still brings back memories of Manx Norton's etc onthe mountain in the Isle of Man. (Happy days. Happy but hard of hearing!) Unfortunately too much noise was going to lose us the use of short circuits especially at places like Mallory Park where parts of the circuit were only 100 yards or so away from some of the houses in the village. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Exhaust Components
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